Flanged Self-Tapping Anchor | High-Capacity, Self-Drilling Anchor for Fast Installation
Product Overview
The Flanged Self-Tapping Anchor is a heavy-duty fastener designed for rapid, high-strength anchoring into solid concrete, brick, and solid masonry. It combines the functions of a drill bit, a tap, and an anchor into a single unit. The hardened steel tip and cutting flutes allow it to drill its own mating thread directly into the base material without pre-tapping, while the integrated flange provides a large bearing surface to distribute clamp load and prevent rotation during installation. This design offers exceptional pull-out strength and immediate load capacity, making it ideal for fastening structural elements, machinery, and heavy fixtures where speed and reliability are critical.
Key Advantages
Self-Drilling & Self-Tapping: Eliminates the need for a separate drill bit and tap, dramatically speeding up the installation process and reducing tooling requirements.
High Load Capacity in Solid Materials: The deep, clean-cut threads formed in the base material provide excellent tensile (pull-out) and shear strength, often exceeding that of many wedge anchors of similar diameter.
Flanged Design: The integrated washer face (flange) distributes load over a wider area, protects the base material surface, and ensures the anchor remains stationary during the final tightening phase.
Immediate Load Application: Can be loaded immediately after correct installation, with no curing time required.
Suitable for Fixture Attachment: The exposed external thread allows for the direct attachment of objects or the use of a standard hex nut for clamping.
Material Specifications & Grades
| Component | Material & Standard | Grade / Treatment | Characteristics |
|---|---|---|---|
| Anchor Body | Medium Carbon / Alloy Steel | Grade 8.8 or 10.9 (ISO 898-1), Quenched & Tempered | Provides the core strength and forms the cutting threads. |
| Cutting Tip & Flutes | Through-hardened steel | High hardness for drilling into concrete and masonry. | |
| Integral Flange | Part of the anchor body | – | Provides bearing surface and anti-rotation during setting. |
| Hex Nut (if supplied) | Carbon Steel | Matched grade to anchor. | For final tightening and clamping. |
Product Specifications
Thread Types: Available with full external thread or a partial thread with an unthreaded shank below the flange.
Drive Types: Internal Hex Drive (Socket) within the flange is most common, allowing for high-torque installation with a drive tool. Some sizes may feature an external hex head.
Size Range: Common metric diameters from M8 to M24, with lengths from 50mm to 300mm+ to accommodate various embedment and fixture thickness requirements.
Available Surface Finishes for Corrosion Protection
| Finish Type | Specification / Process | Protection Level & Use Case |
|---|---|---|
| Zinc Plated (Yellow/Blue) | ASTM B633 | Standard protection for indoor or dry outdoor applications. |
| Hot-Dip Galvanized (HDG) | ASTM A153 / ISO 1461 | Heavy-duty protection for exposed outdoor, industrial, or coastal environments. Post-galvanizing baking is applied to high-strength grades. |
| Zinc-Nickel Alloy Plating | – | Superior corrosion resistance for demanding automotive or industrial applications. |
| Stainless Steel A4 (316) | Passivated per ASTM A967 | Maximum corrosion resistance for harsh chemical or marine environments. |
Installation Guidelines
Mark & Drill Pilot Hole (Optional for some models): For harder concrete, a pilot hole of a smaller diameter may be recommended to guide the anchor and reduce installation torque. Consult technical data.
Drive the Anchor: Using the correct drive tool (e.g., hex key, socket), rotate the anchor into the base material. The cutting flutes will drill and tap the hole simultaneously.
Set to Depth: Continue driving until the flange is firmly seated against the fixture or base material surface.
Final Tightening (if using a nut): Once set, a standard nut can be tightened against the fixture using a wrench to achieve the final clamp load.
Typical Applications
Structural Steel & Framing: Fastening steel beams, columns, and brackets directly to concrete foundations or walls.
Heavy Machinery Installation: Securing industrial machines, generators, and conveyors to concrete floors.
Infrastructure: Installing safety barriers, railings, signage posts, and lighting standards.
Facade & Glazing Systems: Anchoring support brackets for curtain walls and structural glazing.
Quality Assurance
Our Flanged Self-Tapping Anchors are manufactured under a certified ISO 9001:2015 quality management system. Production includes:
Material Certification: Mill Test Certificates for steel.
Dimensional & Hardness Control: Verification of thread form, cutting flute geometry, and core hardness.
Performance Testing: Pull-out and shear testing in representative base materials to validate load ratings.
About Hebei Wohe Fastener Manufacturing Co., Ltd.
Hebei Wohe Fastener Manufacturing Co., Ltd. is a specialized manufacturer of high-performance mechanical anchors and fastening systems. Our expertise in precision forging and heat treatment allows us to produce robust and reliable self-tapping anchors. We collaborate with certified coating partners to provide a range of corrosion protection options suitable for global projects. With a focus on engineering support and reliable supply, we serve the construction, energy, and heavy equipment sectors, ensuring our products meet the demands for both installation efficiency and long-term structural integrity.
Ordering & Technical Support:
To Specify: Provide Thread Diameter (e.g., M12), Total Length, Minimum Embedment Depth, Base Material Type, and Required Finish.
Packaging: Standard boxes or bulk packaging available.
MOQ: Typically starts from 1,000 pieces per size for standard items.
Lead Time: Standard items: 20-25 working days. Custom finishes: 30-35 days.
Disclaimer: This anchor is designed for solid base materials. It is not suitable for hollow block, low-density concrete, or materials with low compressive strength. Correct installation torque is critical to avoid shearing the anchor or stripping the threads in the base material. For structural applications, design must be performed by a qualified engineer in accordance with local codes and the anchor’s technical data.
